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Discontinued: GetGeoIP - Get Country by IP Address
This chapter provides a quick introduction of the free Web service, GetGeoIP, returning the country information with a given IP address. Topics include usage description of GetGeoIP; request message sample; response message sample.
2019-01-29, 570🔥, 1💬

💬 2019-01-29 WEfgwrg: Nice

Introduction to Logical Operations
This section provides a quick introduction of logical operations supported by VBScript: logical negation - Not, conjunction - And, disjunction - Or, exclusion - Xor, equivalence - Eqv, implication - Imp.
2017-03-18, 570🔥, 2💬

💬 2017-03-18 Herong: Amit, Thanks. It's been corrected now.

💬 2017-03-17 Amit Kumar Rout: Logical Conjunction (Add): Resulting (True) if and only if both operands are (True). Correction: Logical Conjunction (And): Resu...

Introduction of .NET Framework
This section provides a quick introduction of the .NET Framework, which was first released in 2002. The .NET Framework provides virtual machine on Windows system to run applications written in different languages.
2016-06-12, 569🔥, 1💬

💬 2016-06-12 Satish: Thanku

System.getenv() Method - System Environment Variables
This section provides tutorial example on how to display system environment variables using the java.lang.System.getenv() method.
2022-10-01, 568🔥, 0💬

Concurrent Mark-Sweep (CMS) Collector - "+XX:+UseConcMarkSweepGC"
This chapter provides tutorial notes and example codes on the Concurrent Mark-Sweep Collector specified by the '+XX:+UseConcMarkSweepGC' JVM option. Topics include introduction to Concurrent Mark-Sweep (CMS) Collector; CMS Collector log message format; demonstration of reduction of stop-the-world by...
2022-10-01, 567🔥, 0💬

Using Sendmail as a Mail User Agent (MUA)
This section provides an example using Sendmail a Mail User Agent (MUA) to transfer a local email message.
2021-05-26, 567🔥, 2💬

💬 2021-05-26 Herong: djj, thanks for your comment.

💬 2021-05-19 djj: Although agreeing that the above is how the MTA should work, I feel it might be worth mentioning that providers in many markets ...

DsaKeyGenerator.java - Generating DSA Key Pair
This section provides a tutorial example on how to using the Java default implementation of DSA (Digital Signature Algorithm) to generate DSA key pair, public key and private key.
2023-01-10, 566🔥, 1💬

💬 2023-01-10 Dontien: The tutorial was helpfull

XSD Schema XML Validator - Final Version
This section describes the final version of the XML Schema (XSD) validator using the JAXP API.
2022-10-01, 566🔥, 0💬

Android Application Package (APK) Files
This chapter provides tutorial notes on Android application package (APK) files. Topics include introduction to APK file; packaging application files into a single APK file; using 'adb' command to install APK files; using 'adb' command to copy file to Android emulator.
2022-12-10, 565🔥, 4💬

💬 2022-08-04 Eddie S: Very Useful! You may also be interested in: APK MODS

💬 2022-08-04 Eddie Stallings: Infromative! Download Android apks here: droidmods.co

Search Operation Performance of Different Collection Classes
This section provides a tutorial example on how to do performance comparison on search operations on different collection classes implemented in JDK 1.4.1. HashSet and LinkedHashSet have the best performance on search operations.
2022-10-01, 565🔥, 0💬

Using Apple Safari as an XML Browser
This section provides a tutorial example on how to use Apple Safari as an XML file browser. Safari displays all elements in an XML file in a tree structure.
2022-10-01, 565🔥, 0💬

"gYearMonth" and "gMonthDay" Datatypes
This section describes the built-in primitive datatype, 'gYearMonth' and 'gMonthDay', that represents year-month and month-day combinations in Gregorian calendar. Leading and trailing whitespaces are allowed and trimmed. Timezone offset is optional.
2022-10-01, 565🔥, 0💬

ReverseEchoServer.java - A Multi-Connection Socket Server
This section provides a tutorial example on how to write a network application, ReverseEchoServer.java, that creates a server socket and listens for multiple remote socket connection requests. It creates a new execution thread each time, for each new connection.
2022-10-01, 564🔥, 0💬

Selection Sort Algorithm and Java Implementation
This chapter provides tutorial notes and codes on the Selection Sort algorithm. Topics include introduction of the Selection Sort algorithm, Java implementation and performance of the Selection Sort algorithm.
2016-03-21, 564🔥, 2💬

💬 2015-10-06 Phani: Very good

💬 2015-10-05 اثمار ياسين: :)

3200: Enclosed CJK Letters and Months
This section provides a quick summary of the Unicode code point block: 'Enclosed CJK Letters and Months', which contains 256 code points to represent characters enclosed in circles used in CJK (Chinese, Japanese, and Korean) languages.
2024-01-23, 563🔥, 0💬

XML-to-JSON Conversion Library for Java
This section provides a tutorial example on how to use a 'JSON-java' conversion library offered by json.org to perform XML-to-JSON conversions in a Java program. The output JSON document is good, only if input XML document contains well structured data.
2022-10-01, 563🔥, 0💬

"-XX:+PrintGCDateStamps" - Calendar Timestamp on GC Messages
This section describes the garbage collection logging option, '-XX:+PrintGCDateStamps', which adds a calendar timestamp to each GC log message.
2022-10-01, 563🔥, 0💬

GB2312 to Unicode - Row 31: 0xBFA1 to 0xBFFE
GB2312 to Unicode code mapping is provided for GB2312 character set - Row 31: Level 1 Hanzi Characters 0xBFA1 to 0xBFFE.
2016-03-10, 563🔥, 1💬

💬 2016-03-10 daz: OUI

What Is Block Cipher?
This section describes what is block cipher - An encryption scheme in which 'the clear text is broken up into blocks of fixed length, and encrypted one block at a time'.
2016-09-26, 562🔥, 1💬

💬 2016-09-26 eva: soooooooo Amazing thank so much this site helping to learn about blowfish algorthm more

String Comparison Operation
This section provides a quick introduction of string comparison operations, which compare one character at a time based its ASCII value.
2016-03-03, 562🔥, 1💬

What Is rdkit.Chem.Draw Module
This section provides a quick introduction of the core module of the RDKit library, rdkit.Chem.Draw, which functionalities to create molecule images in different formats as displaying images, internal objects, or external files.
2022-10-01, 559🔥, 0💬

12000: Cuneiform
This section provides a quick summary of the Unicode code point block: 'Cuneiform', which contains 1024 code points to represent Cuneiform alphabets.
2024-01-23, 558🔥, 0💬

Java Exceptions in AndroidRuntime Error Log
This section provides a tutorial on how use the 'adb logcat' command to retrieve Java exceptions from the AndroidRuntime error log entries.
2022-10-01, 558🔥, 0💬

0000: C0 Controls and Basic Latin
This section provides a quick summary of the Unicode code point block: 'C0 Controls and Basic Latin', which contains 128 code points to represent simple text formatting codes and English language characters.
2024-01-23, 557🔥, 0💬

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